Oil & Gas
| Sat 16 May 2026
Beijing, May 16 -- China Oilfield Services has submitted a patent application for Detection Device for Pile-up Valve and Fluid Valve. This invention was developed by Song Bin, Li Biliu, Chen Xinjun, Chen Tao, Zhao Yuanyang, Wang Peng, Mei Shaoliang, Wang Liang, Shi Dong, Yang Jianbao, Yu Hai, Zhuang Rongbo, Ma Junquan and Yang G..